US PATENT SUBCLASS 72 / 310
.~.~ Clamp rotatable about fixed axis (e.g., bending brake)

Current as of: June, 1999
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72 /   HD   METAL DEFORMING

293  DF  BY USE OF NON-DEFORMING WORK-GRIPPING CLAMP AND RELATIVELY MOVABLE CLAMP, TOOL OR WORK-FORCER {9}
308  DF  .~ Clamp is active metal-deforming element {2}
310.~.~ Clamp rotatable about fixed axis (e.g., bending brake)

DEFINITION

Classification: 72/310

Clamp rotatable about fixed axis (e.g., bending brake):

(under subclass 308) Subject matter wherein the movement of said work-gripping instrumentality consists of turning with respect to a stationary pivot line.

(1) Note. Conventional sheet metal bending brakes employ relatively pivoted clamp and bending tool or apron. The pivoted-clamp type is found in this subclass; for the fixed clamp type, see subclasses 316+ below. Bending brakes and other devices without work clamps will be found in subclasses 380+ and following subclasses.

SEE OR SEARCH THIS CLASS, SUBCLASS:

298+, for metal deformation by two relatively rotatable

work-clamps.

303, for metal deformation by the approach of two work clamps along an arcuate path.

316+, for metal deformation by a tool movable against work held in a fixed clamp, and see (1) Note above.